<style>
  .sk-cube-grid {
    width: 40px;
    height: 40px;
  }

  .sk-cube-grid .sk-cube {
    width: 33.33%;
    height: 33.33%;
    background-color: #fff;
    float: left;
    -webkit-animation: sk-cubeGridScaleDelay 1.3s infinite ease-in-out;
    animation: sk-cubeGridScaleDelay 1.3s infinite ease-in-out;
  }

  .sk-cube-grid .sk-cube1 {
    -webkit-animation-delay: 0.2s;
    animation-delay: 0.2s;
  }

  .sk-cube-grid .sk-cube2 {
    -webkit-animation-delay: 0.3s;
    animation-delay: 0.3s;
  }

  .sk-cube-grid .sk-cube3 {
    -webkit-animation-delay: 0.4s;
    animation-delay: 0.4s;
  }

  .sk-cube-grid .sk-cube4 {
    -webkit-animation-delay: 0.1s;
    animation-delay: 0.1s;
  }

  .sk-cube-grid .sk-cube5 {
    -webkit-animation-delay: 0.2s;
    animation-delay: 0.2s;
  }

  .sk-cube-grid .sk-cube6 {
    -webkit-animation-delay: 0.3s;
    animation-delay: 0.3s;
  }

  .sk-cube-grid .sk-cube7 {
    -webkit-animation-delay: 0s;
    animation-delay: 0s;
  }

  .sk-cube-grid .sk-cube8 {
    -webkit-animation-delay: 0.1s;
    animation-delay: 0.1s;
  }

  .sk-cube-grid .sk-cube9 {
    -webkit-animation-delay: 0.2s;
    animation-delay: 0.2s;
  }

  @-webkit-keyframes sk-cubeGridScaleDelay {
    0%,
    70%,
    100% {
      -webkit-transform: scale3D(1, 1, 1);
      transform: scale3D(1, 1, 1);
    }
    35% {
      -webkit-transform: scale3D(0, 0, 1);
      transform: scale3D(0, 0, 1);
    }
  }

  @keyframes sk-cubeGridScaleDelay {
    0%,
    70%,
    100% {
      -webkit-transform: scale3D(1, 1, 1);
      transform: scale3D(1, 1, 1);
    }
    35% {
      -webkit-transform: scale3D(0, 0, 1);
      transform: scale3D(0, 0, 1);
    }
  }
</style>

<div class="sk-cube-grid">
  <div class="sk-cube sk-cube1" />
  <div class="sk-cube sk-cube2" />
  <div class="sk-cube sk-cube3" />
  <div class="sk-cube sk-cube4" />
  <div class="sk-cube sk-cube5" />
  <div class="sk-cube sk-cube6" />
  <div class="sk-cube sk-cube7" />
  <div class="sk-cube sk-cube8" />
  <div class="sk-cube sk-cube9" />
</div>
